[PATCH] pcmcia: use bitfield instead of p_state and state

Instead of the two status values struct pcmcia_device->p_state and state,
use descriptive bitfields. Most value-checking in drivers was invalid, as
the core now only calls the ->remove() (a.k.a. detach) function in case the
attachement _and_ configuration was successful.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 4 insertions, 12 deletions

diff --git a/drivers/char/pcmcia/cm4040_cs.c b/drivers/char/pcmcia/cm4040_cs.c
index 6ccca8cbabc1..74609c3b2b5f 100644
--- a/drivers/char/pcmcia/cm4040_cs.c
+++ b/drivers/char/pcmcia/cm4040_cs.c
@@ -246,7 +246,7 @@ static ssize_t cm4040_read(struct file *filp, char __user *buf,
                 return -EAGAIN;
         }
 
-        if ((dev->p_dev->state & DEV_PRESENT)==0)
+        if (!pcmcia_dev_present(dev->p_dev))
                 return -ENODEV;
 
         for (i = 0; i < 5; i++) {
@@ -351,7 +351,7 @@ static ssize_t cm4040_write(struct file *filp, const char __user *buf,
                 return -EAGAIN;
         }
 
-        if ((dev->p_dev->state & DEV_PRESENT) == 0)
+        if (!pcmcia_dev_present(dev->p_dev))
                 return -ENODEV;
 
         bytes_to_write = count;
@@ -543,7 +543,6 @@ static int reader_config(struct pcmcia_device *link, int devno)
                 goto cs_failed;
         }
 
-        link->state |= DEV_CONFIG;
         link->conf.ConfigBase = parse.config.base;
         link->conf.Present = parse.config.rmask[0];
 
@@ -602,9 +601,7 @@ static int reader_config(struct pcmcia_device *link, int devno)
         sprintf(dev->node.dev_name, DEVICE_NAME "%d", devno);
         dev->node.major = major;
         dev->node.minor = devno;
-        dev->node.next = NULL;
-        link->dev_node = &dev->node;
-        link->state &= ~DEV_CONFIG_PENDING;
+        dev->node.next = &dev->node;
 
         DEBUGP(2, dev, "device " DEVICE_NAME "%d at 0x%.4x-0x%.4x\n", devno,
               link->io.BasePort1, link->io.BasePort1+link->io.NumPorts1);
@@ -616,7 +613,6 @@ cs_failed:
         cs_error(link, fail_fn, fail_rc);
 cs_release:
         reader_release(link);
-        link->state &= ~DEV_CONFIG_PENDING;
         return -ENODEV;
 }
 
@@ -659,7 +655,6 @@ static int reader_probe(struct pcmcia_device *link)
         init_timer(&dev->poll_timer);
         dev->poll_timer.function = &cm4040_do_poll;
 
-        link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
         ret = reader_config(link, i);
         if (ret)
                 return ret;
@@ -683,10 +678,7 @@ static void reader_detach(struct pcmcia_device *link)
         if (devno == CM_MAX_DEV)
                 return;
 
-        link->state &= ~DEV_PRESENT;
-
-        if (link->state & DEV_CONFIG)
-                reader_release(link);
+        reader_release(link);
 
         dev_table[devno] = NULL;
         kfree(dev);